OpenGLRenderer.cpp revision 759ea80dca64ad652110a129e0d8bf93fea79f61
1e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy/* 2e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * Copyright (C) 2010 The Android Open Source Project 3e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * 4e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * Licensed under the Apache License, Version 2.0 (the "License"); 5e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * you may not use this file except in compliance with the License. 6e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * You may obtain a copy of the License at 7e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * 8e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * http://www.apache.org/licenses/LICENSE-2.0 9e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * 10e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * Unless required by applicable law or agreed to in writing, software 11e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * distributed under the License is distributed on an "AS IS" BASIS, 12e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * See the License for the specific language governing permissions and 14e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy * limitations under the License. 15e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy */ 16e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 1785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy#define LOG_TAG "OpenGLRenderer" 18e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 19e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy#include <stdlib.h> 20e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy#include <stdint.h> 21e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy#include <sys/types.h> 22e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 23bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy#include <SkCanvas.h> 24694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy#include <SkTypeface.h> 255cbbce535744b89df5ecea95de21ee3733298260Romain Guy 265cbbce535744b89df5ecea95de21ee3733298260Romain Guy#include <utils/Log.h> 2785bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 2885bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy#include "OpenGLRenderer.h" 29e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 30e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guynamespace android { 319d5316e3f56d138504565ff311145ac01621dff4Romain Guynamespace uirenderer { 329d5316e3f56d138504565ff311145ac01621dff4Romain Guy 339d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 349d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Defines 359d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 369d5316e3f56d138504565ff311145ac01621dff4Romain Guy 3706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy#define REQUIRED_TEXTURE_UNITS_COUNT 3 3806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 39dda570201ac851dd85af3861f7e575721d3345daRomain Guy// Generates simple and textured vertices 40bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy#define FV(x, y, u, v) { { x, y }, { u, v } } 419d5316e3f56d138504565ff311145ac01621dff4Romain Guy 42759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy#define RAD_TO_DEG (180.0f / 3.14159265f) 43759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy#define MIN_ANGLE 0.001f 44759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 459d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 469d5316e3f56d138504565ff311145ac01621dff4Romain Guy// Globals 479d5316e3f56d138504565ff311145ac01621dff4Romain Guy/////////////////////////////////////////////////////////////////////////////// 489d5316e3f56d138504565ff311145ac01621dff4Romain Guy 49026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// This array is never used directly but used as a memcpy source in the 50026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// OpenGLRenderer constructor 51ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const TextureVertex gMeshVertices[] = { 52c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(0.0f, 0.0f, 0.0f, 0.0f), 53c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(1.0f, 0.0f, 1.0f, 0.0f), 54c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(0.0f, 1.0f, 0.0f, 1.0f), 55c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy FV(1.0f, 1.0f, 1.0f, 1.0f) 56bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy}; 57ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const GLsizei gMeshStride = sizeof(TextureVertex); 58ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guystatic const GLsizei gMeshCount = 4; 59026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 60889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy/** 61889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy * Structure mapping Skia xfermodes to OpenGL blending factors. 62889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy */ 63889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guystruct Blender { 64889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy SkXfermode::Mode mode; 65889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GLenum src; 66889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy GLenum dst; 67889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy}; // struct Blender 68889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 69026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// In this array, the index of each Blender equals the value of the first 70026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy// entry. For instance, gBlends[1] == gBlends[SkXfermode::kSrc_Mode] 71026c5e16704e817cac7d9c382914c947e34f87e0Romain Guystatic const Blender gBlends[] = { 72026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 73026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrc_Mode, GL_ONE, GL_ZERO }, 74026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDst_Mode, GL_ZERO, GL_ONE }, 75026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 76026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 77026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcIn_Mode, GL_DST_ALPHA, GL_ZERO }, 78026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 79026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 80026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 81026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kSrcATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 82026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kDstATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 83026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 84026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy}; 85e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 8687a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// This array contains the swapped version of each SkXfermode. For instance 8787a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// this array's SrcOver blending mode is actually DstOver. You can refer to 8887a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy// createLayer() for more information on the purpose of this array. 89f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guystatic const Blender gBlendsSwap[] = { 90f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO }, 91f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrc_Mode, GL_ZERO, GL_ONE }, 92f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDst_Mode, GL_ONE, GL_ZERO }, 93f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE }, 94f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA }, 95f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcIn_Mode, GL_ZERO, GL_SRC_ALPHA }, 96f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstIn_Mode, GL_DST_ALPHA, GL_ZERO }, 97f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA }, 98f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO }, 99f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kSrcATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA }, 100f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kDstATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }, 101f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA } 102f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy}; 103f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 104889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guystatic const GLenum gTextureUnits[] = { 10506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE0, 10606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE1, 10706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GL_TEXTURE2 108d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy}; 109d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 110f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 111f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Constructors/destructor 112f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 113f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 114fb8b763f762ae21923c58d64caa729b012f40e05Romain GuyOpenGLRenderer::OpenGLRenderer(): mCaches(Caches::getInstance()) { 11585bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy LOGD("Create OpenGLRenderer"); 1169d5316e3f56d138504565ff311145ac01621dff4Romain Guy 11706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = NULL; 118db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = NULL; 1191e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = false; 120026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 121ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy memcpy(mMeshVertices, gMeshVertices, sizeof(gMeshVertices)); 122ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy 123ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy mFirstSnapshot = new Snapshot; 124ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy 125ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy GLint maxTextureUnits; 126ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTextureUnits); 127ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy if (maxTextureUnits < REQUIRED_TEXTURE_UNITS_COUNT) { 128889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy LOGW("At least %d texture units are required!", REQUIRED_TEXTURE_UNITS_COUNT); 129889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } 130b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy 131b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 132e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 133e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 13485bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain GuyOpenGLRenderer::~OpenGLRenderer() { 13585bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy LOGD("Destroy OpenGLRenderer"); 136e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 137e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 138f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 139f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Setup 140f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 141f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 14285bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::setViewport(int width, int height) { 14308ae317c21ec3086b5017672bba87420cc38a407Romain Guy glViewport(0, 0, width, height); 144260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy mOrthoMatrix.loadOrtho(0, width, height, 0, -1, 1); 145bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 146bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mWidth = width; 147bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy mHeight = height; 148e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 149e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 15085bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::prepare() { 1518aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot = new Snapshot(mFirstSnapshot, 1528aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag); 1538fb954263dd2f918ad339045cc6d82e346515599Romain Guy mSaveCount = 1; 154f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 155fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glViewport(0, 0, mWidth, mHeight); 156fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy 157d90f23e24a4d1768d5a7ed0e7072e67af6330a45Romain Guy glDisable(GL_DITHER); 15808ae317c21ec3086b5017672bba87420cc38a407Romain Guy glDisable(GL_SCISSOR_TEST); 159bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 16008ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 16108ae317c21ec3086b5017672bba87420cc38a407Romain Guy glClear(GL_COLOR_BUFFER_BIT); 162bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 16308ae317c21ec3086b5017672bba87420cc38a407Romain Guy glEnable(GL_SCISSOR_TEST); 164c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy glScissor(0, 0, mWidth, mHeight); 165f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 166b82da65cb1601be504241f36778395cd6cb9f87bRomain Guy mSnapshot->setClip(0.0f, 0.0f, mWidth, mHeight); 167bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 168bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 169b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guyvoid OpenGLRenderer::finish() { 170b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy#if DEBUG_OPENGL 171b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy GLenum status = GL_NO_ERROR; 172b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy while ((status = glGetError()) != GL_NO_ERROR) { 173b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy LOGD("GL error from OpenGLRenderer: 0x%x", status); 174b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy } 175b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy#endif 176b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy} 177b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy 178da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guyvoid OpenGLRenderer::acquireContext() { 179da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.currentProgram) { 180da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.currentProgram->isInUse()) { 181da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy mCaches.currentProgram->remove(); 182da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy mCaches.currentProgram = NULL; 183da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 184da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 185da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy} 186da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 187da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guyvoid OpenGLRenderer::releaseContext() { 188f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glViewport(0, 0, mWidth, mHeight); 189da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 190da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glEnable(GL_SCISSOR_TEST); 191da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy setScissorFromClip(); 192da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 193f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glDisable(GL_DITHER); 194f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 195f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBindFramebuffer(GL_FRAMEBUFFER, 0); 196f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 197da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy if (mCaches.blend) { 198da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glEnable(GL_BLEND); 199da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glBlendFunc(mCaches.lastSrcMode, mCaches.lastDstMode); 200f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBlendEquation(GL_FUNC_ADD); 201da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } else { 202da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy glDisable(GL_BLEND); 203da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy } 204da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy} 205da8532c6f48b4c10b5e2ccb9e08690341efa1616Romain Guy 206f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 207f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// State management 208f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 209f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 210bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::getSaveCount() const { 2117ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy return mSaveCount; 212bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 213bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 214bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyint OpenGLRenderer::save(int flags) { 2158aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveSnapshot(flags); 216bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 217bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 218bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restore() { 2192542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy if (mSaveCount > 1) { 2202542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy restoreSnapshot(); 2217ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 222bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 223bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 224bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::restoreToCount(int saveCount) { 2258fb954263dd2f918ad339045cc6d82e346515599Romain Guy if (saveCount < 1) saveCount = 1; 226bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2278fb954263dd2f918ad339045cc6d82e346515599Romain Guy while (mSaveCount > saveCount) { 2282542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy restoreSnapshot(); 2297ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 230bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 231bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 2328aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guyint OpenGLRenderer::saveSnapshot(int flags) { 2338aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot = new Snapshot(mSnapshot, flags); 2348fb954263dd2f918ad339045cc6d82e346515599Romain Guy return mSaveCount++; 235bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 236bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 237bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guybool OpenGLRenderer::restoreSnapshot() { 2387ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy bool restoreClip = mSnapshot->flags & Snapshot::kFlagClipSet; 239bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy bool restoreLayer = mSnapshot->flags & Snapshot::kFlagIsLayer; 240bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 241bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy sp<Snapshot> current = mSnapshot; 2427ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy sp<Snapshot> previous = mSnapshot->previous; 243bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2448b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy mSaveCount--; 2458b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy mSnapshot = previous; 2468b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 247bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy if (restoreLayer) { 248d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy composeLayer(current, previous); 249d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 250bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 2512542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy if (restoreClip) { 2522542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy setScissorFromClip(); 2538fb954263dd2f918ad339045cc6d82e346515599Romain Guy } 2542542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy 2552542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy return restoreClip; 256d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 2575cbbce535744b89df5ecea95de21ee3733298260Romain Guy 258f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 259bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy// Layers 260bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 261bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 262bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayer(float left, float top, float right, float bottom, 263bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy const SkPaint* p, int flags) { 2648aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy int count = saveSnapshot(flags); 265d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 266d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy int alpha = 255; 267d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy SkXfermode::Mode mode; 268d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 269d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy if (p) { 270d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy alpha = p->getAlpha(); 271a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 272a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 273a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 274a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 275a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = SkXfermode::kSrcOver_Mode; 276a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 277a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 278a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = getXfermode(p->getXfermode()); 279d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 280d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } else { 281d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy mode = SkXfermode::kSrcOver_Mode; 282d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy } 283d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 284f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy createLayer(mSnapshot, left, top, right, bottom, alpha, mode, flags); 285d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy 286d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return count; 287bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 288bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 289bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyint OpenGLRenderer::saveLayerAlpha(float left, float top, float right, float bottom, 290bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy int alpha, int flags) { 2918aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy if (alpha == 0xff) { 2928aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveLayer(left, top, right, bottom, NULL, flags); 2938b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } else { 2948aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy SkPaint paint; 2958aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy paint.setAlpha(alpha); 2968aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return saveLayer(left, top, right, bottom, &paint, flags); 2978b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } 298d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy} 299bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 3001c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy/** 3011c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Layers are viewed by Skia are slightly different than layers in image editing 3021c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * programs (for instance.) When a layer is created, previously created layers 3031c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * and the frame buffer still receive every drawing command. For instance, if a 3041c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * layer is created and a shape intersecting the bounds of the layers and the 3051c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * framebuffer is draw, the shape will be drawn on both (unless the layer was 3061c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * created with the SkCanvas::kClipToLayer_SaveFlag flag.) 3071c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3081c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * A way to implement layers is to create an FBO for each layer, backed by an RGBA 3091c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * texture. Unfortunately, this is inefficient as it requires every primitive to 3101c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * be drawn n + 1 times, where n is the number of active layers. In practice this 3111c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * means, for every primitive: 3121c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Switch active frame buffer 3131c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Change viewport, clip and projection matrix 3141c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * - Issue the drawing 3151c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3161c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Switching rendering target n + 1 times per drawn primitive is extremely costly. 3171c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * To avoid this, layers are implemented in a different way here. 3181c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3191c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * This implementation relies on the frame buffer being at least RGBA 8888. When 3201c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * a layer is created, only a texture is created, not an FBO. The content of the 3211c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * frame buffer contained within the layer's bounds is copied into this texture 32287a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * using glCopyTexImage2D(). The layer's region is then cleared(1) in the frame 3231c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * buffer and drawing continues as normal. This technique therefore treats the 3241c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * frame buffer as a scratch buffer for the layers. 3251c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3261c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * To compose the layers back onto the frame buffer, each layer texture 3271c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * (containing the original frame buffer data) is drawn as a simple quad over 3281c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * the frame buffer. The trick is that the quad is set as the composition 3291c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * destination in the blending equation, and the frame buffer becomes the source 3301c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * of the composition. 3311c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3321c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Drawing layers with an alpha value requires an extra step before composition. 3331c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * An empty quad is drawn over the layer's region in the frame buffer. This quad 3341c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * is drawn with the rgba color (0,0,0,alpha). The alpha value offered by the 3351c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * quad is used to multiply the colors in the frame buffer. This is achieved by 3361c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * changing the GL blend functions for the GL_FUNC_ADD blend equation to 3371c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * GL_ZERO, GL_SRC_ALPHA. 3381c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * 3391c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Because glCopyTexImage2D() can be slow, an alternative implementation might 3401c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * be use to draw a single clipped layer. The implementation described above 3411c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * is correct in every case. 34287a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * 34387a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * (1) The frame buffer is actually not cleared right away. To allow the GPU 34487a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * to potentially optimize series of calls to glCopyTexImage2D, the frame 34587a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * buffer is left untouched until the first drawing operation. Only when 34687a76578f76f4a6bceb187da6b7a01899ca0d85aRomain Guy * something actually gets drawn are the layers regions cleared. 3471c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy */ 348d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guybool OpenGLRenderer::createLayer(sp<Snapshot> snapshot, float left, float top, 349d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy float right, float bottom, int alpha, SkXfermode::Mode mode,int flags) { 350d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy LAYER_LOGD("Requesting layer %fx%f", right - left, bottom - top); 351fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy LAYER_LOGD("Layer cache size = %d", mCaches.layerCache.getSize()); 352dda570201ac851dd85af3861f7e575721d3345daRomain Guy 353f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Window coordinates of the layer 3548aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy Rect bounds(left, top, right, bottom); 355f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mSnapshot->transform->mapRect(bounds); 3568aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy 3578411f336c786379c5a03106e9ed3bc8622b579a5Romain Guy // Layers only make sense if they are in the framebuffer's bounds 3588411f336c786379c5a03106e9ed3bc8622b579a5Romain Guy bounds.intersect(*mSnapshot->clipRect); 359bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy bounds.snapToPixelBoundaries(); 360bf434114cbf55b216fdc76fc8d65a75e84c9dab5Romain Guy 361b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy if (bounds.isEmpty() || bounds.getWidth() > mMaxTextureSize || 362b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy bounds.getHeight() > mMaxTextureSize) { 363b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy return false; 364b025b9c8b4efefadb01937db61a1f8ee7d2452bfRomain Guy } 365dda570201ac851dd85af3861f7e575721d3345daRomain Guy 3668411f336c786379c5a03106e9ed3bc8622b579a5Romain Guy LayerSize size(bounds.getWidth(), bounds.getHeight()); 367f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy Layer* layer = mCaches.layerCache.get(size); 368f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy if (!layer) { 369f18fd99b5c182329cd8936a9611f0103d8ece44aRomain Guy return false; 370bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy } 371bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 372dda570201ac851dd85af3861f7e575721d3345daRomain Guy layer->mode = mode; 373f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy layer->alpha = alpha; 3748aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy layer->layer.set(bounds); 375dda570201ac851dd85af3861f7e575721d3345daRomain Guy 3768fb954263dd2f918ad339045cc6d82e346515599Romain Guy // Save the layer in the snapshot 3778fb954263dd2f918ad339045cc6d82e346515599Romain Guy snapshot->flags |= Snapshot::kFlagIsLayer; 378dda570201ac851dd85af3861f7e575721d3345daRomain Guy snapshot->layer = layer; 3791d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 380f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Copy the framebuffer into the layer 381f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glBindTexture(GL_TEXTURE_2D, layer->texture); 382f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bounds.left, mHeight - bounds.bottom, 383f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy bounds.getWidth(), bounds.getHeight(), 0); 384f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 385f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (flags & SkCanvas::kClipToLayer_SaveFlag) { 3868694230ff25fa0a60e480d424843e56b718f0516Romain Guy if (mSnapshot->clipTransformed(bounds)) setScissorFromClip(); 387f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 388f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 3898694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Enqueue the buffer coordinates to clear the corresponding region later 3908694230ff25fa0a60e480d424843e56b718f0516Romain Guy mLayers.push(new Rect(bounds)); 391f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 392d55a86120dd1e8ebcc6906c9ffd463f7460348daRomain Guy return true; 393bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 394bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 3951c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy/** 3961c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy * Read the documentation of createLayer() before doing anything in this method. 3971c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy */ 3981d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guyvoid OpenGLRenderer::composeLayer(sp<Snapshot> current, sp<Snapshot> previous) { 3991d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy if (!current->layer) { 4001d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LOGE("Attempting to compose a layer that does not exist"); 4011d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy return; 4021d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy } 4031d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4041d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // Restore the clip from the previous snapshot 4058aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *previous->clipRect; 406f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glScissor(clip.left, mHeight - clip.bottom, clip.getWidth(), clip.getHeight()); 4071d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4081d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy Layer* layer = current->layer; 4091d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy const Rect& rect = layer->layer; 4101d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 411f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (layer->alpha < 255) { 412f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy drawColorRect(rect.left, rect.top, rect.right, rect.bottom, 4131c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy layer->alpha << 24, SkXfermode::kDstIn_Mode, true); 414f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 415f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 416f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy // Layers are already drawn with a top-left origin, don't flip the texture 4178b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy resetDrawTextureTexCoords(0.0f, 1.0f, 1.0f, 0.0f); 4188b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 419f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy drawTextureMesh(rect.left, rect.top, rect.right, rect.bottom, layer->texture, 420f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy 1.0f, layer->mode, layer->blend, &mMeshVertices[0].position[0], 4216820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy &mMeshVertices[0].texture[0], GL_TRIANGLE_STRIP, gMeshCount, true, true); 4221d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4238b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 4248b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 4251d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LayerSize size(rect.getWidth(), rect.getHeight()); 4261d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // Failing to add the layer to the cache should happen only if the 4271d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy // layer is too large 428fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy if (!mCaches.layerCache.put(size, layer)) { 4291d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy LAYER_LOGD("Deleting layer"); 4301d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4311d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy glDeleteTextures(1, &layer->texture); 4321d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4331d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy delete layer; 4341d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy } 4351d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy} 4361d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy 4378694230ff25fa0a60e480d424843e56b718f0516Romain Guyvoid OpenGLRenderer::clearLayerRegions() { 4388694230ff25fa0a60e480d424843e56b718f0516Romain Guy if (mLayers.size() == 0) return; 4398694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4408694230ff25fa0a60e480d424843e56b718f0516Romain Guy for (uint32_t i = 0; i < mLayers.size(); i++) { 4418694230ff25fa0a60e480d424843e56b718f0516Romain Guy Rect* bounds = mLayers.itemAt(i); 4428694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4438694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Clear the framebuffer where the layer will draw 4448694230ff25fa0a60e480d424843e56b718f0516Romain Guy glScissor(bounds->left, mHeight - bounds->bottom, 4458694230ff25fa0a60e480d424843e56b718f0516Romain Guy bounds->getWidth(), bounds->getHeight()); 4468694230ff25fa0a60e480d424843e56b718f0516Romain Guy glClearColor(0.0f, 0.0f, 0.0f, 0.0f); 4478694230ff25fa0a60e480d424843e56b718f0516Romain Guy glClear(GL_COLOR_BUFFER_BIT); 4488694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4498694230ff25fa0a60e480d424843e56b718f0516Romain Guy delete bounds; 4508694230ff25fa0a60e480d424843e56b718f0516Romain Guy } 4518694230ff25fa0a60e480d424843e56b718f0516Romain Guy mLayers.clear(); 4528694230ff25fa0a60e480d424843e56b718f0516Romain Guy 4538694230ff25fa0a60e480d424843e56b718f0516Romain Guy // Restore the clip 4548694230ff25fa0a60e480d424843e56b718f0516Romain Guy setScissorFromClip(); 4558694230ff25fa0a60e480d424843e56b718f0516Romain Guy} 4568694230ff25fa0a60e480d424843e56b718f0516Romain Guy 457bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy/////////////////////////////////////////////////////////////////////////////// 458f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Transforms 459f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 460f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 461f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::translate(float dx, float dy) { 4628aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->translate(dx, dy, 0.0f); 463f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 464f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 465f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::rotate(float degrees) { 4668aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->rotate(degrees, 0.0f, 0.0f, 1.0f); 467f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 468f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 469f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::scale(float sx, float sy) { 4708aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->scale(sx, sy, 1.0f); 471f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 472f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 473f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::setMatrix(SkMatrix* matrix) { 4748aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->load(*matrix); 475f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 476f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 477f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::getMatrix(SkMatrix* matrix) { 4788aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->copyTo(*matrix); 479f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 480f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 481f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guyvoid OpenGLRenderer::concatMatrix(SkMatrix* matrix) { 4827ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy mat4 m(*matrix); 4838aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->multiply(m); 484f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy} 485f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 486f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 487f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Clipping 488f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 489f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 490bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guyvoid OpenGLRenderer::setScissorFromClip() { 4918aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *mSnapshot->clipRect; 492f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy glScissor(clip.left, mHeight - clip.bottom, clip.getWidth(), clip.getHeight()); 4939d5316e3f56d138504565ff311145ac01621dff4Romain Guy} 4949d5316e3f56d138504565ff311145ac01621dff4Romain Guy 4959d5316e3f56d138504565ff311145ac01621dff4Romain Guyconst Rect& OpenGLRenderer::getClipBounds() { 496079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy return mSnapshot->getLocalClip(); 497bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy} 498bb9524b6bdddc7ac77d8628daa8b366b8a7be4a4Romain Guy 499c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guybool OpenGLRenderer::quickReject(float left, float top, float right, float bottom) { 5001d83e1981c8b89da93dff37a4f8b2b1ad8480b44Romain Guy Rect r(left, top, right, bottom); 5018aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mSnapshot->transform->mapRect(r); 5028aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return !mSnapshot->clipRect->intersects(r); 503c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 504c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy 505079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guybool OpenGLRenderer::clipRect(float left, float top, float right, float bottom, SkRegion::Op op) { 506079ba2c85b15e882629b8d188f5fbdb42f7f8eeaRomain Guy bool clipped = mSnapshot->clip(left, top, right, bottom, op); 5077ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy if (clipped) { 5087ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy setScissorFromClip(); 5097ae7ac48aa2b53453c9805075171ecd5bcafd7deRomain Guy } 5108aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy return !mSnapshot->clipRect->isEmpty(); 511e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy} 512e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy 513f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 514f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy// Drawing 515f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy/////////////////////////////////////////////////////////////////////////////// 516f6a11b8a9e25ff9861bbba19251bea84d8a5daf2Romain Guy 517c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, float left, float top, const SkPaint* paint) { 5186926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float right = left + bitmap->width(); 5196926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy const float bottom = top + bitmap->height(); 5206926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 5216926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 5226926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5236926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5246926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 52561c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 526fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5279cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 52822158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 52922158e139a3d6c6a9787ca0de224e9368f643284Romain Guy 5306926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy drawTextureRect(left, top, right, bottom, texture, paint); 5318ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 5328ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 533f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, const SkMatrix* matrix, const SkPaint* paint) { 534f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy Rect r(0.0f, 0.0f, bitmap->width(), bitmap->height()); 535f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const mat4 transform(*matrix); 536f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy transform.mapRect(r); 537f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 5386926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(r.left, r.top, r.right, r.bottom)) { 5396926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5406926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5416926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 54261c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 543fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5449cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 54522158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 54622158e139a3d6c6a9787ca0de224e9368f643284Romain Guy 54782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy drawTextureRect(r.left, r.top, r.right, r.bottom, texture, paint); 548f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy} 549f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy 5508ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::drawBitmap(SkBitmap* bitmap, 5518ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float srcLeft, float srcTop, float srcRight, float srcBottom, 5528ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy float dstLeft, float dstTop, float dstRight, float dstBottom, 553f86ef57f8bcd8ba43ce222ec6a8b4f67d3600640Romain Guy const SkPaint* paint) { 5546926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(dstLeft, dstTop, dstRight, dstBottom)) { 5556926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5566926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5576926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 55861c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 559fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5609cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 56122158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 5628ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 5638ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float width = texture->width; 5648ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float height = texture->height; 565c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 5668ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u1 = srcLeft / width; 5678ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v1 = srcTop / height; 5688ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float u2 = srcRight / width; 5698ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy const float v2 = srcBottom / height; 570c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 5718ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(u1, v1, u2, v2); 5728ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 57382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy drawTextureRect(dstLeft, dstTop, dstRight, dstBottom, texture, paint); 5748ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 5758ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); 576ce0537b80087a6225273040a987414b1dd081aa0Romain Guy} 577ce0537b80087a6225273040a987414b1dd081aa0Romain Guy 578deba785f122a47915756ffd991f5540d952cf937Romain Guyvoid OpenGLRenderer::drawPatch(SkBitmap* bitmap, Res_png_9patch* patch, 579deba785f122a47915756ffd991f5540d952cf937Romain Guy float left, float top, float right, float bottom, const SkPaint* paint) { 5806926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 5816926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 5826926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 5836926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 58461c8c9c5b2006d18e9310b6521c65b36ffe75ce4Romain Guy glActiveTexture(GL_TEXTURE0); 585fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const Texture* texture = mCaches.textureCache.get(bitmap); 5869cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 58722158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 588f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 589f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy int alpha; 590f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy SkXfermode::Mode mode; 591f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy getAlphaAndMode(paint, &alpha, &mode); 592f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 593fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy Patch* mesh = mCaches.patchCache.get(patch); 594759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mesh->updateVertices(bitmap->width(), bitmap->height(),left, top, right, bottom, 595fb5e23c327cd5f8f93d1eaa7c10f34d6fd3efb6cRomain Guy &patch->xDivs[0], &patch->yDivs[0], patch->numXDivs, patch->numYDivs); 596f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 597f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy // Specify right and bottom as +1.0f from left/top to prevent scaling since the 598f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy // patch mesh already defines the final size 599a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, left + 1.0f, top + 1.0f, texture->id, alpha / 255.0f, 600a979474f15b454c8e2963f239a3770e200bb227cRomain Guy mode, texture->blend, &mesh->vertices[0].position[0], 6016820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy &mesh->vertices[0].texture[0], GL_TRIANGLES, mesh->verticesCount); 602f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 603f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 604759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guyvoid OpenGLRenderer::drawLines(float* points, int count, const SkPaint* paint) { 605759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy int alpha; 606759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy SkXfermode::Mode mode; 607759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy getAlphaAndMode(paint, &alpha, &mode); 608759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 609759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy uint32_t color = paint->getColor(); 610759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat a = alpha / 255.0f; 611759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 612759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 613759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 614759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 615759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy GLuint textureUnit = 0; 616759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy setupTextureAlpha8(mLine.getTexture(), 0, 0, textureUnit, 0.0f, 0.0f, r, g, b, a, 617759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mode, false, true, mLine.getVertices(), mLine.getTexCoords()); 618759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 619759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy for (int i = 0; i < count; i += 4) { 620759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy float tx = 0.0f; 621759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy float ty = 0.0f; 622759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 623759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mLine.update(points[i], points[i + 1], points[i + 2], points[i + 3], 624759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy paint->getStrokeWidth(), tx, ty); 625759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 626759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float dx = points[i + 2] - points[i]; 627759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float dy = points[i + 3] - points[i + 1]; 628759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float mag = sqrtf(dx * dx + dy * dy); 629759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy const float angle = acos(dx / mag); 630759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 631759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.loadTranslate(points[i], points[i + 1], 0.0f); 632759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy if (angle > MIN_ANGLE || angle < -MIN_ANGLE) { 633759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.rotate(angle * RAD_TO_DEG, 0.0f, 0.0f, 1.0f); 634759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 635759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mModelView.translate(tx, ty, 0.0f); 636759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 637759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 638759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy if (mShader) { 639759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy mShader->updateTransforms(mCaches.currentProgram, mModelView, *mSnapshot); 640759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 641759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 642759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy glDrawArrays(GL_TRIANGLES, 0, mLine.getElementsCount()); 643759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy } 644759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 645759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 646759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy} 647759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 64885bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guyvoid OpenGLRenderer::drawColor(int color, SkXfermode::Mode mode) { 6498aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy const Rect& clip = *mSnapshot->clipRect; 6503d58c03de0d8877b36cdb78b0ca8b5cac7f600e2Romain Guy drawColorRect(clip.left, clip.top, clip.right, clip.bottom, color, mode, true); 651c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 6529d5316e3f56d138504565ff311145ac01621dff4Romain Guy 653bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawRect(float left, float top, float right, float bottom, const SkPaint* p) { 6546926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy if (quickReject(left, top, right, bottom)) { 6556926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return; 6566926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy } 6576926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 658026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy SkXfermode::Mode mode; 659a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 660a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode); 661a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 662a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 663a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = SkXfermode::kSrcOver_Mode; 664a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 665a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 666a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mode = getXfermode(p->getXfermode()); 667026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 668026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 669026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Skia draws using the color's alpha channel if < 255 670026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy // Otherwise, it uses the paint's alpha 671026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy int color = p->getColor(); 672d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (((color >> 24) & 0xff) == 255) { 673026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy color |= p->getAlpha() << 24; 674026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy } 675026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 676026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy drawColorRect(left, top, right, bottom, color, mode); 677c7d53494f1fbd9f9d74af89053ff9fdb1ccbac6cRomain Guy} 6789d5316e3f56d138504565ff311145ac01621dff4Romain Guy 679e8e62a4a032a80409114a37908b5f18ab0080848Romain Guyvoid OpenGLRenderer::drawText(const char* text, int bytesCount, int count, 680e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy float x, float y, SkPaint* paint) { 681f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (text == NULL || count == 0 || (paint->getAlpha() == 0 && paint->getXfermode() == NULL)) { 682e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy return; 683e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 684f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy paint->setAntiAlias(true); 685e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 686a674ab74e359ac73b4c4dd6b1a3a771836ac7e40Romain Guy float length = -1.0f; 687e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy switch (paint->getTextAlign()) { 688e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kCenter_Align: 689e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 690e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length / 2.0f; 691e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 692e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy case SkPaint::kRight_Align: 693e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy length = paint->measureText(text, bytesCount); 694e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy x -= length; 695e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 696e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy default: 697e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy break; 698e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy } 699e8e62a4a032a80409114a37908b5f18ab0080848Romain Guy 700694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy int alpha; 701694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy SkXfermode::Mode mode; 702694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy getAlphaAndMode(paint, &alpha, &mode); 703694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 7042542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy uint32_t color = paint->getColor(); 7052542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat a = alpha / 255.0f; 7062542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 7072542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 7082542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 7092542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy 710b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy FontRenderer& fontRenderer = mCaches.fontRenderer.getFontRenderer(paint); 711b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy fontRenderer.setFont(paint, SkTypeface::UniqueID(paint->getTypeface()), 712fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy paint->getTextSize()); 7131e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy if (mHasShadow) { 7141e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy glActiveTexture(gTextureUnits[0]); 715b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy mCaches.dropShadowCache.setFontRenderer(fontRenderer); 716fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const ShadowTexture* shadow = mCaches.dropShadowCache.get(paint, text, bytesCount, 7171e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy count, mShadowRadius); 7181e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy const AutoTexture autoCleanup(shadow); 7190a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7202542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy setupShadow(shadow, x, y, mode, a); 7210a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7220a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Draw the mesh 7230a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 724fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 7251e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy } 7261e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 72706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GLuint textureUnit = 0; 728db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy glActiveTexture(gTextureUnits[textureUnit]); 72906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 730b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy setupTextureAlpha8(fontRenderer.getTexture(), 0, 0, textureUnit, x, y, r, g, b, a, 7310a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mode, false, true); 73206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 73309147fbdc8206a0cac78bfe9083e7e15b3c5689cRomain Guy const Rect& clip = mSnapshot->getLocalClip(); 7348694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 735b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy fontRenderer.renderText(paint, &clip, text, 0, bytesCount, count, x, y); 736694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 737694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); 738fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 739a674ab74e359ac73b4c4dd6b1a3a771836ac7e40Romain Guy 7400a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy drawTextDecorations(text, bytesCount, length, x, y, paint); 741694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy} 742694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 7437fbcc0492fca03857e3c45064f4aa040af817d55Romain Guyvoid OpenGLRenderer::drawPath(SkPath* path, SkPaint* paint) { 7447fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy GLuint textureUnit = 0; 7457fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy glActiveTexture(gTextureUnits[textureUnit]); 7467fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 747fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy const PathTexture* texture = mCaches.pathCache.get(path, paint); 7489cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy if (!texture) return; 74922158e139a3d6c6a9787ca0de224e9368f643284Romain Guy const AutoTexture autoCleanup(texture); 7507fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 7518b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy const float x = texture->left - texture->offset; 7528b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy const float y = texture->top - texture->offset; 7538b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 7548b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy if (quickReject(x, y, x + texture->width, y + texture->height)) { 7558b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy return; 7568b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy } 7578b55f377655d13a445b08a0a8ed09b6e95c752b0Romain Guy 7587fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy int alpha; 7597fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy SkXfermode::Mode mode; 7607fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy getAlphaAndMode(paint, &alpha, &mode); 7617fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 7627fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy uint32_t color = paint->getColor(); 7637fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat a = alpha / 255.0f; 7647fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 7657fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 7667fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 7677fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 7680a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture, textureUnit, x, y, r, g, b, a, mode, true, true); 7690a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 7708694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 7718694230ff25fa0a60e480d424843e56b718f0516Romain Guy 7720a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Draw the mesh 7730a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 774fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glDisableVertexAttribArray(mCaches.currentProgram->getAttrib("texCoords")); 7757fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy} 7767fbcc0492fca03857e3c45064f4aa040af817d55Romain Guy 7776926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 778d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy// Shaders 779d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 780d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 781d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guyvoid OpenGLRenderer::resetShader() { 78206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = NULL; 78306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy} 78406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy 78506f96e2652e4855b6520ad9dd70583677605b79aRomain Guyvoid OpenGLRenderer::setupShader(SkiaShader* shader) { 78606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader = shader; 78706f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 788fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->set(&mCaches.textureCache, &mCaches.gradientCache); 78906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy } 7907fac2e18339f765320d759e8d4c090f92431959eRomain Guy} 7917fac2e18339f765320d759e8d4c090f92431959eRomain Guy 792d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy/////////////////////////////////////////////////////////////////////////////// 793db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy// Color filters 794db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy/////////////////////////////////////////////////////////////////////////////// 795db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 796db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guyvoid OpenGLRenderer::resetColorFilter() { 797db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = NULL; 798db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy} 799db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 800db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guyvoid OpenGLRenderer::setupColorFilter(SkiaColorFilter* filter) { 801db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter = filter; 802db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy} 803db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 804db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy/////////////////////////////////////////////////////////////////////////////// 8051e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy// Drop shadow 8061e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy/////////////////////////////////////////////////////////////////////////////// 8071e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 8081e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guyvoid OpenGLRenderer::resetShadow() { 8091e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = false; 8101e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy} 8111e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 8121e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guyvoid OpenGLRenderer::setupShadow(float radius, float dx, float dy, int color) { 8131e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mHasShadow = true; 8141e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowRadius = radius; 8151e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowDx = dx; 8161e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowDy = dy; 8171e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy mShadowColor = color; 8181e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy} 8191e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 8201e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy/////////////////////////////////////////////////////////////////////////////// 8216926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy// Drawing implementation 8226926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy/////////////////////////////////////////////////////////////////////////////// 8236926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy 8240a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupShadow(const ShadowTexture* texture, float x, float y, 8252542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy SkXfermode::Mode mode, float alpha) { 8260a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const float sx = x - texture->left + mShadowDx; 8270a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const float sy = y - texture->top + mShadowDy; 8280a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8292542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const int shadowAlpha = ((mShadowColor >> 24) & 0xFF); 8302542d199745cdf3ec910b8e3e4cff5851ed24e9bRomain Guy const GLfloat a = shadowAlpha < 255 ? shadowAlpha / 255.0f : alpha; 8310a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat r = a * ((mShadowColor >> 16) & 0xFF) / 255.0f; 8320a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat g = a * ((mShadowColor >> 8) & 0xFF) / 255.0f; 8330a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy const GLfloat b = a * ((mShadowColor ) & 0xFF) / 255.0f; 8340a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8350a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy GLuint textureUnit = 0; 8360a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture, textureUnit, sx, sy, r, g, b, a, mode, true, false); 8370a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 8380a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8390a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupTextureAlpha8(const Texture* texture, GLuint& textureUnit, 8400a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float x, float y, float r, float g, float b, float a, SkXfermode::Mode mode, 8410a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bool transforms, bool applyFilters) { 8420a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy setupTextureAlpha8(texture->id, texture->width, texture->height, textureUnit, 843759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy x, y, r, g, b, a, mode, transforms, applyFilters, 844759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0]); 8450a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 8460a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8470a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::setupTextureAlpha8(GLuint texture, uint32_t width, uint32_t height, 8480a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy GLuint& textureUnit, float x, float y, float r, float g, float b, float a, 8490a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy SkXfermode::Mode mode, bool transforms, bool applyFilters) { 850759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy setupTextureAlpha8(texture, width, height, textureUnit, 851759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy x, y, r, g, b, a, mode, transforms, applyFilters, 852759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0]); 853759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy} 854759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy 855759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guyvoid OpenGLRenderer::setupTextureAlpha8(GLuint texture, uint32_t width, uint32_t height, 856759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy GLuint& textureUnit, float x, float y, float r, float g, float b, float a, 857759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy SkXfermode::Mode mode, bool transforms, bool applyFilters, 858759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy GLvoid* vertices, GLvoid* texCoords) { 8590a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Describe the required shaders 8600a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy ProgramDescription description; 8610a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy description.hasTexture = true; 8620a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy description.hasAlpha8Texture = true; 8630a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8640a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (applyFilters) { 8650a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mShader) { 8660a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mShader->describe(description, mExtensions); 8670a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8680a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mColorFilter) { 8690a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mColorFilter->describe(description, mExtensions); 8700a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8710a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8720a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 873a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Setup the blending mode 874a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy chooseBlending(true, mode, description); 875a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 8760a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Build and use the appropriate shader 877fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 8780a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8790a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bindTexture(texture, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, textureUnit); 880fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform1i(mCaches.currentProgram->getUniform("sampler"), textureUnit); 8810a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 882fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords"); 8830a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glEnableVertexAttribArray(texCoordsSlot); 8840a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8850a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup attributes 886fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 887759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy gMeshStride, vertices); 8880a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, 889759ea80dca64ad652110a129e0d8bf93fea79f61Romain Guy gMeshStride, texCoords); 8900a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 8910a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup uniforms 8920a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (transforms) { 8930a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.loadTranslate(x, y, 0.0f); 8940a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.scale(width, height, 1.0f); 8950a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } else { 8960a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy mModelView.loadIdentity(); 8970a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 8988aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 899fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform4f(mCaches.currentProgram->color, r, g, b, a); 9000a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9010a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy textureUnit++; 9020a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (applyFilters) { 9030a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Setup attributes and uniforms required by the shaders 9040a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mShader) { 905fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->setupProgram(mCaches.currentProgram, mModelView, *mSnapshot, &textureUnit); 9060a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9070a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (mColorFilter) { 908fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 9090a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9100a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9110a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 9120a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 913f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy// Same values used by Skia 9140a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdStrikeThru_Offset (-6.0f / 21.0f) 9150a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdUnderline_Offset (1.0f / 9.0f) 9160a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy#define kStdUnderline_Thickness (1.0f / 18.0f) 9170a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9180a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guyvoid OpenGLRenderer::drawTextDecorations(const char* text, int bytesCount, float length, 9190a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float x, float y, SkPaint* paint) { 9200a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // Handle underline and strike-through 9210a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy uint32_t flags = paint->getFlags(); 9220a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & (SkPaint::kUnderlineText_Flag | SkPaint::kStrikeThruText_Flag)) { 9230a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float underlineWidth = length; 9240a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy // If length is > 0.0f, we already measured the text for the text alignment 9250a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (length <= 0.0f) { 9260a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy underlineWidth = paint->measureText(text, bytesCount); 9270a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9280a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9290a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float offsetX = 0; 9300a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy switch (paint->getTextAlign()) { 9310a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy case SkPaint::kCenter_Align: 9320a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy offsetX = underlineWidth * 0.5f; 9330a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 9340a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy case SkPaint::kRight_Align: 9350a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy offsetX = underlineWidth; 9360a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 9370a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy default: 9380a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy break; 9390a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9400a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9410a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (underlineWidth > 0.0f) { 9420a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float textSize = paint->getTextSize(); 9430a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float height = textSize * kStdUnderline_Thickness; 9440a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9450a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float left = x - offsetX; 9460a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float top = 0.0f; 9470a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float right = left + underlineWidth; 9480a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy float bottom = 0.0f; 9490a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9500a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & SkPaint::kUnderlineText_Flag) { 9510a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy top = y + textSize * kStdUnderline_Offset; 9520a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bottom = top + height; 9530a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy drawRect(left, top, right, bottom, paint); 9540a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9550a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 9560a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy if (flags & SkPaint::kStrikeThruText_Flag) { 9570a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy top = y + textSize * kStdStrikeThru_Offset; 9580a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy bottom = top + height; 9590a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy drawRect(left, top, right, bottom, paint); 9600a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9610a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9620a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy } 9630a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy} 9640a41749953f35d33f61b3119e3161a82bb5fa59eRomain Guy 965026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::drawColorRect(float left, float top, float right, float bottom, 9661c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy int color, SkXfermode::Mode mode, bool ignoreTransform) { 9678694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 9688694230ff25fa0a60e480d424843e56b718f0516Romain Guy 969d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // If a shader is set, preserve only the alpha 97006f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 971d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy color |= 0x00ffffff; 972d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 973d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 974d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy // Render using pre-multiplied alpha 975026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy const int alpha = (color >> 24) & 0xFF; 976d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy const GLfloat a = alpha / 255.0f; 977c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f; 978c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f; 979c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const GLfloat b = a * ((color ) & 0xFF) / 255.0f; 980c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 98106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy GLuint textureUnit = 0; 9829d5316e3f56d138504565ff311145ac01621dff4Romain Guy 98306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Describe the required shaders 984889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 98506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 98606f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mShader->describe(description, mExtensions); 987c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 988db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 989db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter->describe(description, mExtensions); 990db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 991c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 9921c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy // Setup the blending mode 9931c740bce8a762f02b5283045a0e2de7c8fb41277Romain Guy chooseBlending(alpha < 255 || (mShader && mShader->blend()), mode, description); 994a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 99506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Build and use the appropriate shader 996fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 997c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 99806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup attributes 999fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 1000ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, &mMeshVertices[0].position[0]); 1001c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 100206f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup uniforms 1003889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.loadTranslate(left, top, 0.0f); 1004889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy mModelView.scale(right - left, bottom - top, 1.0f); 100506f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (!ignoreTransform) { 10068aef54fa17f2a3753d9a8f2027629bc480088f69Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 1007889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } else { 100806f96e2652e4855b6520ad9dd70583677605b79aRomain Guy mat4 identity; 1009fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, identity); 1010889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy } 1011fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform4f(mCaches.currentProgram->color, r, g, b, a); 1012d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 101306f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Setup attributes and uniforms required by the shaders 101406f96e2652e4855b6520ad9dd70583677605b79aRomain Guy if (mShader) { 1015fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mShader->setupProgram(mCaches.currentProgram, mModelView, *mSnapshot, &textureUnit); 1016d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy } 1017db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1018fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 1019db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1020d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 102106f96e2652e4855b6520ad9dd70583677605b79aRomain Guy // Draw the mesh 1022889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount); 1023d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy} 1024d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy 102582ba814ca0dea659be2cc6523bc0137679d961ceRomain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 1026a979474f15b454c8e2963f239a3770e200bb227cRomain Guy const Texture* texture, const SkPaint* paint) { 102782ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy int alpha; 102882ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy SkXfermode::Mode mode; 102982ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy getAlphaAndMode(paint, &alpha, &mode); 103082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 10316820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy drawTextureMesh(left, top, right, bottom, texture->id, alpha / 255.0f, mode, 10326820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy texture->blend, &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0], 10336820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GL_TRIANGLE_STRIP, gMeshCount); 103485bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy} 103585bf02fc16784d935fb9eebfa9cb20fe46ff7951Romain Guy 1036bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guyvoid OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom, 1037a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend) { 1038a979474f15b454c8e2963f239a3770e200bb227cRomain Guy drawTextureMesh(left, top, right, bottom, texture, alpha, mode, blend, 10396820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy &mMeshVertices[0].position[0], &mMeshVertices[0].texture[0], 10406820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GL_TRIANGLE_STRIP, gMeshCount); 1041f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy} 1042f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guy 1043f7f93556c8fcc640ab5adef79d021a80a72a645aRomain Guyvoid OpenGLRenderer::drawTextureMesh(float left, float top, float right, float bottom, 1044a979474f15b454c8e2963f239a3770e200bb227cRomain Guy GLuint texture, float alpha, SkXfermode::Mode mode, bool blend, 10456820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount, 1046f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy bool swapSrcDst, bool ignoreTransform) { 10478694230ff25fa0a60e480d424843e56b718f0516Romain Guy clearLayerRegions(); 10488694230ff25fa0a60e480d424843e56b718f0516Romain Guy 1049889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy ProgramDescription description; 1050889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy description.hasTexture = true; 1051db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1052db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy mColorFilter->describe(description, mExtensions); 1053db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1054889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy 1055bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.loadTranslate(left, top, 0.0f); 1056bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy mModelView.scale(right - left, bottom - top, 1.0f); 1057bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1058f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy chooseBlending(blend || alpha < 1.0f, mode, description, swapSrcDst); 1059a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1060fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy useProgram(mCaches.programCache.get(description)); 1061f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy if (!ignoreTransform) { 1062f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, *mSnapshot->transform); 1063f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } else { 1064f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mat4 m; 1065f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy mCaches.currentProgram->set(mOrthoMatrix, mModelView, m); 1066f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy } 1067bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1068889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Texture 106906f96e2652e4855b6520ad9dd70583677605b79aRomain Guy bindTexture(texture, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE, 0); 1070fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform1i(mCaches.currentProgram->getUniform("sampler"), 0); 1071c1396e93b6a5286a5183c00c781b62e940a12c1fRomain Guy 1072a979474f15b454c8e2963f239a3770e200bb227cRomain Guy // Always premultiplied 1073fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glUniform4f(mCaches.currentProgram->color, alpha, alpha, alpha, alpha); 1074bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1075889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy // Mesh 1076fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy int texCoordsSlot = mCaches.currentProgram->getAttrib("texCoords"); 1077889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glEnableVertexAttribArray(texCoordsSlot); 1078fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy glVertexAttribPointer(mCaches.currentProgram->position, 2, GL_FLOAT, GL_FALSE, 1079ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy gMeshStride, vertices); 1080889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glVertexAttribPointer(texCoordsSlot, 2, GL_FLOAT, GL_FALSE, gMeshStride, texCoords); 1081bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1082db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy // Color filter 1083db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy if (mColorFilter) { 1084fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mColorFilter->setupProgram(mCaches.currentProgram); 1085db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy } 1086db1938e0e6ef816e228c815adccebd5cb05f2aa8Romain Guy 10876820ac8b14b4558f5d8b833dde80895306a3e137Romain Guy glDrawArrays(drawMode, 0, elementsCount); 1088889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glDisableVertexAttribArray(texCoordsSlot); 108982ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy} 109082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1091a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guyvoid OpenGLRenderer::chooseBlending(bool blend, SkXfermode::Mode mode, 1092f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy ProgramDescription& description, bool swapSrcDst) { 109382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy blend = blend || mode != SkXfermode::kSrcOver_Mode; 109482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy if (blend) { 1095a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mode < SkXfermode::kPlus_Mode) { 1096a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mCaches.blend) { 1097a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glEnable(GL_BLEND); 1098a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 109982ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1100f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLenum sourceMode = swapSrcDst ? gBlendsSwap[mode].src : gBlends[mode].src; 1101f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy GLenum destMode = swapSrcDst ? gBlendsSwap[mode].dst : gBlends[mode].dst; 110282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy 1103a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (sourceMode != mCaches.lastSrcMode || destMode != mCaches.lastDstMode) { 1104a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glBlendFunc(sourceMode, destMode); 1105a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mCaches.lastSrcMode = sourceMode; 1106a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy mCaches.lastDstMode = destMode; 1107a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1108a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 1109a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // These blend modes are not supported by OpenGL directly and have 1110a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // to be implemented using shaders. Since the shader will perform 1111a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // the blending, turn blending off here 1112a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mExtensions.hasFramebufferFetch()) { 1113a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy description.framebufferMode = mode; 1114f607bdc167f66b3e7003acaa4736ae46d78c1492Romain Guy description.swapSrcDst = swapSrcDst; 1115a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1116a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1117a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mCaches.blend) { 1118a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy glDisable(GL_BLEND); 1119a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1120a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy blend = false; 112182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 1122fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy } else if (mCaches.blend) { 112382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy glDisable(GL_BLEND); 112482ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy } 1125fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.blend = blend; 1126bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy} 1127bd6b79b40247aea7bfe13d0831c6c0472df6c636Romain Guy 1128889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guybool OpenGLRenderer::useProgram(Program* program) { 1129d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy if (!program->isInUse()) { 1130fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy if (mCaches.currentProgram != NULL) mCaches.currentProgram->remove(); 1131d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895Romain Guy program->use(); 1132fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCaches.currentProgram = program; 11336926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return false; 1134260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy } 11356926c72e25b8dec3dd4b84af0819fa1937ae7296Romain Guy return true; 1136260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy} 1137260e102162322958cf17dbd895cd6bd30dc87e32Romain Guy 1138026c5e16704e817cac7d9c382914c947e34f87e0Romain Guyvoid OpenGLRenderer::resetDrawTextureTexCoords(float u1, float v1, float u2, float v2) { 1139ac670c0433d19397d4e36ced2110475b6f54fe26Romain Guy TextureVertex* v = &mMeshVertices[0]; 114082ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v1); 114182ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v1); 114282ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u1, v2); 114382ba814ca0dea659be2cc6523bc0137679d961ceRomain Guy TextureVertex::setUV(v++, u2, v2); 11448ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy} 11458ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 11468ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guyvoid OpenGLRenderer::getAlphaAndMode(const SkPaint* paint, int* alpha, SkXfermode::Mode* mode) { 11478ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (paint) { 1148a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!mExtensions.hasFramebufferFetch()) { 1149a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy const bool isMode = SkXfermode::IsMode(paint->getXfermode(), mode); 1150a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (!isMode) { 1151a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy // Assume SRC_OVER 1152a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy *mode = SkXfermode::kSrcOver_Mode; 1153a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1154a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } else { 1155a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy *mode = getXfermode(paint->getXfermode()); 11568ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 11578ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy 11588ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Skia draws using the color's alpha channel if < 255 11598ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy // Otherwise, it uses the paint's alpha 11608ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy int color = paint->getColor(); 11618ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = (color >> 24) & 0xFF; 11628ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy if (*alpha == 255) { 11638ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = paint->getAlpha(); 11648ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 11658ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } else { 11668ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *mode = SkXfermode::kSrcOver_Mode; 11678ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy *alpha = 255; 11688ba548f81d1ab5f1750cbf86098c4a14e0b8beadRomain Guy } 1169026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy} 1170026c5e16704e817cac7d9c382914c947e34f87e0Romain Guy 1171a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain GuySkXfermode::Mode OpenGLRenderer::getXfermode(SkXfermode* mode) { 1172a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy if (mode == NULL) { 1173a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy return SkXfermode::kSrcOver_Mode; 1174a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy } 1175a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy return mode->fMode; 1176a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy} 1177a5aed0d58962a24c44728ffc46dc9e1ba2f9fda5Romain Guy 1178889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guyvoid OpenGLRenderer::bindTexture(GLuint texture, GLenum wrapS, GLenum wrapT, GLuint textureUnit) { 1179889f8d1403761d5668115ced6cbb3f767cfe966dRomain Guy glActiveTexture(gTextureUnits[textureUnit]); 1180ae5575b3421c8fbe590ab046d7d5f2b36ecfd821Romain Guy glBindTexture(GL_TEXTURE_2D, texture); 1181a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrapS); 1182a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrapT); 1183a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy} 1184a1db574036c9bc2d397b69f8200594027e1fff16Romain Guy 11859d5316e3f56d138504565ff311145ac01621dff4Romain Guy}; // namespace uirenderer 1186e4d011201cea40d46cb2b2eef401db8fddc5c9c6Romain Guy}; // namespace android 1187